Safe Haskell | Safe-Inferred |
---|---|
Language | Haskell2010 |
- Docker images
- Referring to Docker images
docker run
parameters- Logs
docker network
parameters- Creating networks
- Port
- Running Docker containers (
docker run
) - Inspecting Docker containers
- Docker container lifecycle
- Readiness checks
- Monad
- Configuration
- Exceptions
- Misc. Docker functions
- Predefined Docker images
- Reexports
This module shall be used as entrypoint to the testcontainers library. It exports all the necessary types and functions for most common use-cases.
Synopsis
- type ImageTag = Text
- data Image
- imageTag :: Image -> ImageTag
- data ToImage
- fromTag :: ImageTag -> ToImage
- fromBuildContext :: FilePath -> Maybe FilePath -> ToImage
- build :: ToImage -> TestContainer ToImage
- data ContainerRequest
- containerRequest :: ToImage -> ContainerRequest
- setName :: Text -> ContainerRequest -> ContainerRequest
- setFixedName :: Text -> ContainerRequest -> ContainerRequest
- setSuffixedName :: Text -> ContainerRequest -> ContainerRequest
- setRandomName :: ContainerRequest -> ContainerRequest
- setCmd :: [Text] -> ContainerRequest -> ContainerRequest
- setVolumeMounts :: [(Text, Text)] -> ContainerRequest -> ContainerRequest
- setRm :: Bool -> ContainerRequest -> ContainerRequest
- setEnv :: [(Text, Text)] -> ContainerRequest -> ContainerRequest
- setNetwork :: Text -> ContainerRequest -> ContainerRequest
- withNetwork :: Network -> ContainerRequest -> ContainerRequest
- withNetworkAlias :: Text -> ContainerRequest -> ContainerRequest
- setLink :: [ContainerId] -> ContainerRequest -> ContainerRequest
- setExpose :: [Port] -> ContainerRequest -> ContainerRequest
- setWaitingFor :: WaitUntilReady -> ContainerRequest -> ContainerRequest
- withFollowLogs :: LogConsumer -> ContainerRequest -> ContainerRequest
- type LogConsumer = Pipe -> ByteString -> IO ()
- consoleLogConsumer :: LogConsumer
- data NetworkRequest
- networkRequest :: NetworkRequest
- withDriver :: Text -> NetworkRequest -> NetworkRequest
- withIpv6 :: NetworkRequest -> NetworkRequest
- data Network
- type NetworkId = Text
- createNetwork :: NetworkRequest -> TestContainer Network
- data Port = Port {}
- data Container
- containerAlias :: Container -> Text
- containerGateway :: Container -> Text
- containerIp :: Container -> Text
- containerPort :: Container -> Port -> Int
- containerAddress :: MonadIO m => Container -> Port -> m (Text, Int)
- containerReleaseKey :: Container -> ReleaseKey
- containerImage :: Container -> Image
- run :: ContainerRequest -> TestContainer Container
- type InspectOutput = Value
- inspect :: Container -> TestContainer InspectOutput
- stop :: Container -> TestContainer ()
- kill :: Container -> TestContainer ()
- rm :: Container -> TestContainer ()
- withLogs :: Container -> (Handle -> Handle -> TestContainer a) -> TestContainer a
- data WaitUntilReady
- waitUntilTimeout :: Int -> WaitUntilReady -> WaitUntilReady
- data State
- data Status
- stateError :: State -> Maybe Text
- stateExitCode :: State -> Maybe Int
- stateFinishedAt :: State -> Maybe Text
- stateOOMKilled :: State -> Bool
- statePid :: State -> Maybe Int
- stateStartedAt :: State -> Maybe Text
- stateStatus :: State -> Status
- waitForState :: (State -> Bool) -> WaitUntilReady
- successfulExit :: State -> Bool
- data Pipe
- waitWithLogs :: (Container -> Handle -> Handle -> IO ()) -> WaitUntilReady
- waitForLogLine :: Pipe -> (Text -> Bool) -> WaitUntilReady
- waitUntilMappedPortReachable :: Port -> WaitUntilReady
- waitForHttp :: Port -> String -> [Int] -> WaitUntilReady
- type MonadDocker m = m ~ TestContainer
- data TestContainer a
- data Config = Config {}
- defaultDockerConfig :: Config
- determineConfig :: IO Config
- data Tracer
- data Trace
- newTracer :: (Trace -> IO ()) -> Tracer
- data DockerException
- = DockerException { }
- | InspectUnknownContainerId {
- id :: ContainerId
- | InspectOutputInvalidJSON {
- id :: ContainerId
- | InspectOutputMissingNetwork {
- id :: ContainerId
- | InspectOutputUnexpected {
- id :: ContainerId
- | UnknownPortMapping {
- id :: ContainerId
- port :: Text
- newtype TimeoutException = TimeoutException {
- id :: ContainerId
- newtype UnexpectedEndOfPipe = UnexpectedEndOfPipe {
- id :: ContainerId
- dockerHostOs :: TestContainer Text
- isDockerOnLinux :: TestContainer Bool
- redis :: ToImage
- mongo :: ToImage
- type ResIO = ResourceT IO
- runResourceT :: MonadUnliftIO m => ResourceT m a -> m a
- (&) :: a -> (a -> b) -> b
Docker images
Handle to a Docker image.
Since: 0.1.0.0
imageTag :: Image -> ImageTag Source #
The image tag assigned by Docker. Uniquely identifies an Image
within Docker.
Since: 0.1.0.0
Referring to Docker images
fromBuildContext :: FilePath -> Maybe FilePath -> ToImage Source #
Build the image from a build path and an optional path to the Dockerfile (default is Dockerfile)
Since: 0.1.0.0
build :: ToImage -> TestContainer ToImage Source #
Build the Image
referred to by the argument. If the construction of the
image is expensive (e.g. a call to fromBuildContext
) we don't want to
repeatedly build the image. Instead, build
can be used to execute the
underlying Docker build once and re-use the resulting Image
.
Since: 0.1.0.0
docker run
parameters
data ContainerRequest Source #
Parameters for a running a Docker container.
Since: 0.1.0.0
containerRequest :: ToImage -> ContainerRequest Source #
Default ContainerRequest
. Used as base for every Docker container.
Since: 0.1.0.0
setName :: Text -> ContainerRequest -> ContainerRequest Source #
Deprecated: See setFixedName
Set the name of a Docker container. This is equivalent to invoking docker run
with the --name
parameter.
Since: 0.1.0.0
setFixedName :: Text -> ContainerRequest -> ContainerRequest Source #
Set the name of a Docker container. This is equivalent to invoking docker run
with the --name
parameter.
Since: 0.4.0.0
setSuffixedName :: Text -> ContainerRequest -> ContainerRequest Source #
Set the name randomly suffixed of a Docker container. This is equivalent to invoking
docker run
with the --name
parameter.
Since: 0.4.0.0
setRandomName :: ContainerRequest -> ContainerRequest Source #
Set the name randomly given of a Docker container. This is equivalent to omitting
the --name
parameter calling docker run
.
Since: 0.4.0.0
setCmd :: [Text] -> ContainerRequest -> ContainerRequest Source #
The command to execute inside the Docker container. This is the equivalent
of passing the command on the docker run
invocation.
Since: 0.1.0.0
setVolumeMounts :: [(Text, Text)] -> ContainerRequest -> ContainerRequest Source #
The volume mounts to link to Docker container. This is the equivalent
of passing the command on the docker run -v
invocation.
setRm :: Bool -> ContainerRequest -> ContainerRequest Source #
Wether to remove the container once exited. This is equivalent to passing
--rm
to docker run
. (default is True
).
Since: 0.1.0.0
setEnv :: [(Text, Text)] -> ContainerRequest -> ContainerRequest Source #
Set the environment for the container. This is equivalent to passing --env key=value
to docker run
.
Since: 0.1.0.0
setNetwork :: Text -> ContainerRequest -> ContainerRequest Source #
Set the network the container will connect to. This is equivalent to passing
--network network_name
to docker run
.
Since: 0.4.0.0
withNetwork :: Network -> ContainerRequest -> ContainerRequest Source #
Set the network the container will connect to. This is equivalent to passing
--network network_name
to docker run
.
Since: 0.4.0.0
withNetworkAlias :: Text -> ContainerRequest -> ContainerRequest Source #
Set the network alias for this container. This is equivalent to passing
--network-alias alias
to docker run
.
Since: 0.4.0.0
setLink :: [ContainerId] -> ContainerRequest -> ContainerRequest Source #
Set link on the container. This is equivalent to passing --link other_container
to docker run
.
Since: 0.1.0.0
setExpose :: [Port] -> ContainerRequest -> ContainerRequest Source #
Set exposed ports on the container. This is equivalent to setting --publish $PORT
to
docker run
. Docker assigns a random port for the host port. You will have to use containerIp
and containerPort
to connect to the published port.
container <-run
$containerRequest
redis
&setExpose
[ 6379 ] let (redisHost, redisPort) = (containerIp
container,containerPort
container 6379) print (redisHost, redisPort)
Since: 0.1.0.0
setWaitingFor :: WaitUntilReady -> ContainerRequest -> ContainerRequest Source #
Set the waiting strategy on the container. Depending on a Docker container
it can take some time until the provided service is ready. You will want to
use to setWaitingFor
to block until the container is ready to use.
Since: 0.1.0.0
withFollowLogs :: LogConsumer -> ContainerRequest -> ContainerRequest Source #
Forwards container logs to the given LogConsumer
once ran.
Since: 0.4.0.0
Logs
type LogConsumer = Pipe -> ByteString -> IO () Source #
An abstraction for forwarding logs.
Since: 0.4.0.0
consoleLogConsumer :: LogConsumer Source #
A simple LogConsumer
that writes log lines to stdout and stderr respectively.
Since: 0.4.0.0
docker network
parameters
data NetworkRequest Source #
Parameters for creating a new Docker network.
Since: 0.4.0.0
networkRequest :: NetworkRequest Source #
Default parameters for creating a new Docker network.
Since: 0.4.0.0
withDriver :: Text -> NetworkRequest -> NetworkRequest Source #
Driver to manage the Network (default "bridge").
Since: 0.4.0.0
withIpv6 :: NetworkRequest -> NetworkRequest Source #
Enable IPv6 for the Docker network.
Since: 0.4.0.0
Creating networks
type NetworkId = Text Source #
Identifies a network within the Docker runtime. Assigned by docker network create
Since: 0.4.0.0
createNetwork :: NetworkRequest -> TestContainer Network Source #
Creates a new Network
from a NetworkRequest
.
Since: 0.4.0.0
Port
Defintion of a Port
. Allows for specifying ports using various protocols. Due to the
Num
and IsString
instance allows for convenient Haskell literals.
>>>
"80" :: Port
80/tcp
>>>
"80/tcp" :: Port
80/tcp
>>>
80 :: Port
80/tcp
>>>
"90/udp" :: Port
90/udp
Instances
IsString Port Source # | A cursed but handy instance supporting literal Since: 0.4.0.0 |
Defined in TestContainers.Docker fromString :: String -> Port # | |
Num Port Source # | A cursed but handy instance supporting literal Since: 0.4.0.0 |
Show Port Source # | |
Eq Port Source # | |
Ord Port Source # | |
Running Docker containers (docker run
)
containerAlias :: Container -> Text Source #
Get the container's network alias. Takes the first alias found.
Since: 0.4.0.0
containerGateway :: Container -> Text Source #
Get the IP address for the container's gateway, i.e. the host. Takes the first gateway address found.
Since: 0.4.0.0
containerIp :: Container -> Text Source #
Looks up the ip address of the container.
Since: 0.1.0.0
containerPort :: Container -> Port -> Int Source #
Looks up an exposed port on the host.
Since: 0.1.0.0
containerAddress :: MonadIO m => Container -> Port -> m (Text, Int) Source #
Returns the domain and port exposing the given container's port. Differs
from containerPort
in that containerAddress
will return the container's
domain and port if the program is running in the same network. Otherwise,
containerAddress
will use the exposed port on the Docker host.
Since: 0.4.0.0
containerReleaseKey :: Container -> ReleaseKey Source #
Deprecated: Containers are cleaned up with a separate resource reaper. Releasing the container manually is not going to work.
Returns the internal release key used for safely shutting down the container. Use this with care. This function is considered an internal detail.
Since: 0.1.0.0
containerImage :: Container -> Image Source #
Returns the underlying image of the container.
Since: 0.1.0.0
run :: ContainerRequest -> TestContainer Container Source #
Runs a Docker container from an Image
and ContainerRequest
. A finalizer
is registered so that the container is aways stopped when it goes out of scope.
This function is essentially docker run
.
Since: 0.1.0.0
Inspecting Docker containers
type InspectOutput = Value Source #
The parsed JSON output of docker inspect command.
Since: 0.1.0.0
inspect :: Container -> TestContainer InspectOutput Source #
Runs the `docker inspect` command. Memoizes the result.
Since: 0.1.0.0
Docker container lifecycle
stop :: Container -> TestContainer () Source #
Stops a Docker container. stop
is essentially docker stop
.
Since: 0.1.0.0
kill :: Container -> TestContainer () Source #
Kills a Docker container. kill
is essentially docker kill
.
Since: 0.1.0.0
rm :: Container -> TestContainer () Source #
Remove a Docker container. rm
is essentially docker rm -f
Since: 0.1.0.0
withLogs :: Container -> (Handle -> Handle -> TestContainer a) -> TestContainer a Source #
Access STDOUT and STDERR of a running Docker container. This is essentially
docker logs
under the hood.
Since: 0.1.0.0
Readiness checks
data WaitUntilReady Source #
A strategy that describes how to asses readiness of a Container
. Allows
Users to plug in their definition of readiness.
Since: 0.1.0.0
Instances
Monoid WaitUntilReady Source # | Since: 0.4.0.0 |
Defined in TestContainers.Docker mappend :: WaitUntilReady -> WaitUntilReady -> WaitUntilReady # mconcat :: [WaitUntilReady] -> WaitUntilReady # | |
Semigroup WaitUntilReady Source # | Since: 0.4.0.0 |
Defined in TestContainers.Docker (<>) :: WaitUntilReady -> WaitUntilReady -> WaitUntilReady # sconcat :: NonEmpty WaitUntilReady -> WaitUntilReady # stimes :: Integral b => b -> WaitUntilReady -> WaitUntilReady # |
Timeout for readiness checks
waitUntilTimeout :: Int -> WaitUntilReady -> WaitUntilReady Source #
waitUntilTimeout n waitUntilReady
waits n
seconds for the container
to be ready. If the container is not ready by then a TimeoutException
will
be thrown.
Since: 0.1.0.0
Wait for container exit
Status of a Docker container.
Since: 0.4.0.0
stateOOMKilled :: State -> Bool Source #
Whether a container was killed by the OOM killer.
Since: 0.4.0.0
waitForState :: (State -> Bool) -> WaitUntilReady Source #
waitForState
waits for a certain state of the container. If the container reaches a terminal
state InvalidStateException
will be thrown.
Since: 0.4.0.0
Predicates to assert container state
successfulExit :: State -> Bool Source #
successfulExit
is supposed to be used in conjunction with waitForState
.
Since: 0.4.0.0
Waiting on particular log lines
A data type indicating which pipe to scan for a specific log line.
Since: 0.1.0.0
waitWithLogs :: (Container -> Handle -> Handle -> IO ()) -> WaitUntilReady Source #
A low-level primitive that allows scanning the logs for specific log lines that indicate readiness of a container.
The Handle
s passed to the function argument represent stdout
and stderr
of the container.
Since: 0.1.0.0
waitForLogLine :: Pipe -> (Text -> Bool) -> WaitUntilReady Source #
Waits for a specific line to occur in the logs. Throws a UnexpectedEndOfPipe
exception in case the desired line can not be found on the logs.
Say you want to find "Ready to accept connections" in the logs on Stdout try:
waitForLogLine Stdout ("Ready to accept connections" `isInfixOf`
)
Since: 0.1.0.0
Wait until connection can be established
waitUntilMappedPortReachable :: Port -> WaitUntilReady Source #
Waits until the port of a container is ready to accept connections.
This combinator should always be used with waitUntilTimeout
.
Since: 0.1.0.0
Wait until the http server responds with a specific status code
:: Port | Port |
-> String | URL path |
-> [Int] | Acceptable status codes |
-> WaitUntilReady |
Waits for a specific http status code.
This combinator should always be used with waitUntilTimeout
.
Since: 0.4.0.0
Monad
type MonadDocker m = m ~ TestContainer Source #
Docker related functionality is parameterized over this Monad
. Since 0.4.0.0 this is
just a type alias for m ~
.TestContainer
Since: 0.1.0.0
data TestContainer a Source #
The heart and soul of the testcontainers library.
Since: 0.4.0.0
Instances
Configuration
Configuration for defaulting behavior.
Since: 0.2.0.0
Config | |
|
Instances
MonadReader Config TestContainer Source # | |
Defined in TestContainers.Monad ask :: TestContainer Config # local :: (Config -> Config) -> TestContainer a -> TestContainer a # reader :: (Config -> a) -> TestContainer a # |
defaultDockerConfig :: Config Source #
Default configuration.
Since: 0.2.0.0
determineConfig :: IO Config Source #
Autoselect the default configuration depending on wether you use Docker For Mac or not.
Traces execution within testcontainers library.
Type representing various events during testcontainer execution.
TraceDockerInvocation [Text] Text ExitCode | The low-level invocation of TraceDockerInvocation args stdin exitcode |
TraceDockerFollowLogs [Text] | Preparations to follow the logs for a certain container |
TraceDockerStdout Text | Line written to STDOUT by a Docker process. |
TraceDockerStderr Text | Line written to STDERR by a Docker process. |
TraceWaitUntilReady (Maybe Int) | Waiting for a container to become ready. Attached with the timeout to wait (in seconds). |
TraceOpenSocket Text Int (Maybe IOException) | Opening socket |
TraceHttpCall Text Int (Either String Int) | Call HTTP endpoint |
Exceptions
data DockerException Source #
Failing to interact with Docker results in this exception being thrown.
Since: 0.1.0.0
DockerException | |
InspectUnknownContainerId | |
| |
InspectOutputInvalidJSON | |
| |
InspectOutputMissingNetwork | |
| |
InspectOutputUnexpected | |
| |
UnknownPortMapping | |
|
Instances
Exception DockerException Source # | |
Defined in TestContainers.Docker.Internal | |
Show DockerException Source # | |
Defined in TestContainers.Docker.Internal showsPrec :: Int -> DockerException -> ShowS # show :: DockerException -> String # showList :: [DockerException] -> ShowS # | |
Eq DockerException Source # | |
Defined in TestContainers.Docker.Internal (==) :: DockerException -> DockerException -> Bool # (/=) :: DockerException -> DockerException -> Bool # |
newtype TimeoutException Source #
The exception thrown by waitUntilTimeout
.
Since: 0.1.0.0
TimeoutException | |
|
Instances
Exception TimeoutException Source # | |
Defined in TestContainers.Docker | |
Show TimeoutException Source # | |
Defined in TestContainers.Docker showsPrec :: Int -> TimeoutException -> ShowS # show :: TimeoutException -> String # showList :: [TimeoutException] -> ShowS # | |
Eq TimeoutException Source # | |
Defined in TestContainers.Docker (==) :: TimeoutException -> TimeoutException -> Bool # (/=) :: TimeoutException -> TimeoutException -> Bool # |
newtype UnexpectedEndOfPipe Source #
The exception thrown by waitForLine
in case the expected log line
wasn't found.
Since: 0.1.0.0
UnexpectedEndOfPipe | |
|
Instances
Exception UnexpectedEndOfPipe Source # | |
Defined in TestContainers.Docker | |
Show UnexpectedEndOfPipe Source # | |
Defined in TestContainers.Docker showsPrec :: Int -> UnexpectedEndOfPipe -> ShowS # show :: UnexpectedEndOfPipe -> String # showList :: [UnexpectedEndOfPipe] -> ShowS # | |
Eq UnexpectedEndOfPipe Source # | |
Defined in TestContainers.Docker (==) :: UnexpectedEndOfPipe -> UnexpectedEndOfPipe -> Bool # (/=) :: UnexpectedEndOfPipe -> UnexpectedEndOfPipe -> Bool # |
Misc. Docker functions
Predefined Docker images
Reexports
runResourceT :: MonadUnliftIO m => ResourceT m a -> m a #
Unwrap a ResourceT
transformer, and call all registered release actions.
Note that there is some reference counting involved due to resourceForkIO
.
If multiple threads are sharing the same collection of resources, only the
last call to runResourceT
will deallocate the resources.
NOTE Since version 1.2.0, this function will throw a
ResourceCleanupException
if any of the cleanup functions throw an
exception.
Since: resourcet-0.3.0